How long should a diesel bus warm up?

At school bus depots, limit the idling time during early morning warm-up to what is recommended by the manufacturer (generally 3 to 5 minutes). In colder climates, block heaters can help warm the engine of older vehicles to avoid starting difficulties and shorten warm-up time.



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A typical school bus burns approximately one-half gallon of diesel fuel for each hour it idles. Thus, if a company operates 50 buses and each bus reduces its idling time by 30 minutes per day, at $1per gallon of diesel fuel, the company would save $2,250 per school year in fuel costs.

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The factors contributing to fatigue differ between bus drivers, just like any other profession. However, drivers who maintain a rigid schedule of work and sleep usually have less trouble dealing with fatigue. Fatigue is your body's signal to you that it needs rest and quality sleep.

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This timeframe matches a diesel school bus, which has an average lifespan of 12 – 15 years as well.

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